FPCN39 CWLW 201329
SMOKE CONTROL FORECAST FOR COASTAL BC AND THE INTERIOR INCLUDING THE
NORTHEAST ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF
ENVIRONMENT CANADA AT 7:00 AM PDT TUESDAY 20 OCTOBER 1998 FOR TODAY.
VENTILATION INDICES (TEMPERATURE) AND MIXING HEIGHTS.
MIXING HEIGHTS IN METRES ABOVE SEA LEVEL.
AVERAGE WINDS IN KNOTS.
SPOT INDICES ARE DETERMINED BY THE ASPECT AND ELEVATION OF THE SITES.
COMPARE WINDS, TEMPERATURES AND ELEVATION WITH THE SITES HERE
TO DETERMINE THE INDEX IN ANY OTHER AREA.
SOUTHERN INTERIOR
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
FRSR CANYN KEL 17 8 550 2 48 14 1350 5
KAMLOOPS KEL 14 7 600 2 46 14 1450 5
OKANAGAN KEL 13 6 550 2 44 13 1400 5
CASTLEGAR SPOK 14 6 750 2 34 12 1050 5
CRANBROOK SPOK 9 3 950 10 42 11 1300 5
REVELSTOKE KEL 11 5 550 2 46 11 1300 5
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON VR 5 SE 13 S 15
CRANBROOK VR 5 VR 5
TODAY'S VENTING: FAIR.
VENTING FOR WEDNESDAY: FAIR
CENTRAL INTERIOR/NORTHEAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
WILLIAMS L P.G. 9 4 950 16 43 11 1300 10
PR. GEORGE P.G. 9 5 850 0 47 11 1150 10
SMITHERS P.G. 9 5 850 0 47 12 1100 10
WELLS GRAY P.G. 9 5 1000 16 41 11 1300 10
FT NLSN F.N. 9 8 400 14 39 16 600 12
FT STJOHN F.N. 9 8 700 14 59 15 700 14
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE SW 37 SW 44
SMITHERS SW 54 SW 44
TODAY'S VENTING: FAIR EXCEPT GOOD IN FT ST JOHN DUE TO STRONG WINDS.
VENTING FOR WEDNESDAY: FAIR.
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 9 10 100 5 22 16 350 5
FRASER VLY QUIL 9 10 50 5 29 19 500 5
SRN VRISL QUIL 14 11 150 4 25 17 350 5
CNTRL VRISL QUIL 13 10 100 4 27 18 450 5
NRN VRISL HRDY 28 10 300 7 39 14 450 8
TERRACE ANT 10 9 200 34 50 12 1150 5
STEWART ANT 9 9 0 18 50 12 700 9
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
VANCOUVER E 33 SE 28 SE 24
PORT HARDY S 26 S 33 S 39
SANDSPIT S 57 S 78 SW 80
TODAY'S VENTING: FAIR.
VENTING FOR WEDNESDAY: FAIR
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
END/LM